Everyone with no idea seems to have an opinion about what's happening. So it must be my turn
This is what's going to happen.
The problem is the right seat of the 380. Aircraft keep coming and they need to fill the seats. Most of the new joiners, due lack of experience are going to the 777. So they have a few options to keep guys in the 380 right seat.
Step 1. Most of the 330 guys will go RHS 380.
Step 2. Put an age limit on 380 upgrades.
Step 3. Downgrade 380 captains who don't meet the new requirements.
Step 4. Bring the highly experienced 777 captains over to the 380
There will be further upgrades on the 380 if you meet the requirments. Any shortfall will be filled with 777 captains.
The 777 upgrade and new hire process will continue.
At some point there will be an announcement that the 380s are being converted to 350. With deliveries starting a couple years later. This will be done in a way to save face. It will be airbuses fault and will have nothing to do with the great management team. They would prefer 787 but they are stuck in a massive 380 order that they can't get out of other than converting to something else.
There will be winners and losers in this whole process. They don't care who is who.
That's what is going to happen. Or maybe not. I really don't know either.